Super Street Feature: 2007 Subaru WRX STi – Baby Got Black

If you want to know what a badass car looks like, look no further. You won’t find any bright colors, flashy parts or stretched tires. This murdered-out Subie is all about performance with a built motor, tight chassis and a stance that’s designed to go, not show!

We tracked down this buff STI to the Bay Area. It’s taken the owner Matthew Tomczek six years to get his project where it is today. And from our interview with him, we realized he believes strongly in one rule: performance over looks.

Seibon Carbon front lip. Photo credit: Super Street.com

Matt kicked off the six-year project by tackling the turbocharged flat-four. Keeping the motor and intercooler stock at first, he added a few bolt-ons and had the car tuned for E85. He told us by simply switching from 91-octane to the ethanol fuel blend, the car made 100hp and 100 lb-ft of torque more on the dyno! Impressive numbers but the increase in power and regular abuse ultimately pushed the limits of the motor too far. The piston ringlands eventually gave way and cracked. Matt did his research and learned it was a common problem for modified STIs so he wasn’t discouraged. Instead, it only made him more determined to build a stronger and faster Subaru.

Unfortunately, Matt discovered later the shop he trusted the engine build to didn’t have their shit together. So when his Subie got back on the road, it never ran smooth and catastrophe struck again when the cylinder walls cracked. For the second time, the motor had to be torn apart. Matt called the help of reputable shops Race Engine Development to resleave the block while Rob’s Auto Machine and RBMS Autocare ensured the rest of the engine would be properly assembled, balanced and blueprinted. GST Motorsports took care of the final tune and the 2.5-liter threw down a respectable 422whp and 457 lb-ft of torque—plenty of power for the streets if you ask us.

Photo credit: Super Street.com

Matt also brought the drivetrain and chassis up to speed at the same time. The six-speed manual received a grippier RPS clutch and ACT lightweight flywheel. Stiffer engine and tranny mounts, plus new steering and rear diff bushings ensured a more positive driving feel.

As for the suspension, only the best parts were installed on all four corners—TEIN Flex coilovers. Plenty of bracing stiffened up the chassis including a Cobb rear sway bar, Cusco strut bars, plus a lower H- and rear V-braces.

Photo credit: Super Street.com

Photo credit: Super Street.com

Since Matt was an autocross fiend, the widest wheels and tires were high on his priority list to get the most traction. In time, everybody and their mother with a Subaru started picking up RPF1s so he switched to something a little different, yet still lightweight and evil-looking—18×10.5″ Advan RG-Ds.

He couldn’t stop there as he drew up plans to make the exterior pop. Keeping everything motorsport-inspired, he fitted a Chargespeed body kit, plus a Seibon front lip, rear wing, canards and a rear diffuser—most of which was made of carbon.

Seibon Carbon front lip. Photo credit: Super Street.com

We’ll admit Matt’s WRX isn’t the anything innovative in today’s scene, nor is it going to win any awards or break any track records; but on the real, it’s got the whole package and shows us that an aggressive all-black and track-themed project car never gets old.